Percentages II - Ambitious

Question 1: Write as a percentage

1 \frac{2}{5}

A

50 %

B

140 %

C

30 %

D

14 %

Question 2: Find a number if

4 %

of that number is

15

A

37.5

B

6

C

375

D

60

Question 3: In a park grows

300

oaks. How many trees are in the park, if the oaks make up

25 %

of all trees?

A

120

B

600

C

650

D

1200

Question 4: Find

8 %

of

4 k m

A

3 k m

B

32 m

C

320 m

D

400 m

Question 5: Cost of manufacturing parts at the factory is

680

pounds. The introduction of new technologies has allowed to reduce the cost by

2 %

. What is the cost of manufacturing parts after changes?

A

£ 666

B

£ 666.4

C

£ 672

D

£ 670

Question 6: When grinding wheat, the yield of flour is

80 %

. How much wheat should be used to get

610 k g

kg of flour?

A

700 k g

B

762.5 k g

C

762 k g

D

690 k g

Question 7: The width of the rectangle is

6 c m

and is

32 %

of its length. Find the perimeter of the rectangle.

A

47 c m

B

48 c m

C

49.5 c m

D

49 c m

Question 8: The alloy of gold and silver contains

40 %

of gold. What is the mass of the alloy, if the gold weighs

335 g

?

A

810 g

B

800 g

C

837.5 g

D

820 g

Question 9: The height of the rectangular parallelepiped is

5 c m

. It is

40 %

of the length and

60 %

of the width. Find the volume of the parallelepiped.

A

625 c m^{3}

B

623 c m^{3}

C

625 m^{3}

D

620 c m^{3}

Question 10: Find

35 %

of the sum of

1 \frac{13}{14}

and

\frac{3}{4}

A

\frac{1}{4}

B

0.4

C

4

D

0.04

Test: Percentages II - Ambitious

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